Novel clasp spring and bearing

Abstract

The present application discloses a novel circlip and a bearing, including an annular body with a notch. First ribs are vertically connected to both axial sides of the annular body. Second ribs are connected to the first ribs and parallel to the annular body, such that the overall cross-section of the circlip is in a "C" shape. When the circlip is installed on the bearing, the inner wall of the first ribs abuts against one side of the groove portion of the inner ring of the bearing, and the outer wall of the second ribs abuts against the other side of the groove portion of the inner ring of the bearing, firmly clamping the two inner rings of the bearing together to ensure the normal operation of the bearing. The first ribs and the second ribs respectively abut against both sides of the groove portion of the inner ring of the bearing, forming a two-way clamping fixing method. The overall cross-section of the circlip is in a "C" shape, and this structure endows the second ribs with a certain elastic deformation ability. During the installation process, the second ribs can adapt to the installation space and force through elastic deformation, achieving uniform and controllable deformation.

Description

Technical Field

[0001] This application belongs to the field of bearing retaining rings, and particularly relates to a novel retaining ring and bearing. Background Technology

[0002] Double-row tapered roller bearings, as a type of rolling bearing with a special structure, play a crucial role in mechanical transmission systems. This bearing mainly consists of two opposing inner rings, an outer ring fitted around the two inner rings, and rolling elements located between the inner and outer rings. Due to the special structure of the two inner rings in double-row tapered roller bearings, relative displacement can easily occur between the two inner rings during actual operation. This not only affects the normal operating accuracy of the bearing but may also lead to accelerated wear of internal components and shorten the bearing's service life. Therefore, to increase the stability of the two inner rings and ensure reliable operation under complex conditions such as high speed and heavy load, a retaining ring is required between the two inner rings. The retaining ring, also known as a spring retainer, primarily functions to effectively fix the two inner rings together, preventing relative movement during operation, thereby ensuring the overall performance and stability of the bearing.

[0003] Currently, the snap rings available on the market for double-row tapered roller bearings are broadly classified into two types: corrugated snap rings and concave snap rings. Corrugated snap rings, due to their structural characteristics, are typically designed with a larger width. When actually installed in double-row tapered roller bearings, this larger width requires more internal bearing space. However, the internal space of a bearing is limited, and an excessively wide snap ring sacrifices valuable bearing space, potentially affecting the layout and normal operation of other components within the bearing. For example, it may limit the number or size of rolling elements, reducing the bearing's load-bearing capacity. Concave snap rings are structurally simpler, but their support method has significant shortcomings. This type of snap ring relies solely on the sidewalls to support the bearing. When subjected to complex loads generated during bearing operation, due to its limited support area, stress concentration is more pronounced, leading to insufficient strength. Under long-term high-load operation or large impact loads, concave snap rings are prone to deformation or even breakage, thus losing their fixing effect on the two inner rings, causing bearing failure, and seriously affecting the normal operation of mechanical equipment. During installation, the concave retaining ring needs to undergo appropriate deformation to be smoothly inserted between the inner rings of the bearing. However, due to its structural design, the concave retaining ring lacks sufficient toughness and elasticity during deformation, making it difficult to achieve uniform and controllable deformation. This leads to localized excessive deformation or stress concentration of the retaining ring during installation, increasing the risk of breakage. Therefore, the existing technology needs further improvement. Utility Model Content

[0004] This utility model provides a new type of retaining ring and bearing, which solves the problems of insufficient support and fixation, lack of strength, and easy breakage during installation of existing bearing retaining rings.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] A novel retaining ring includes an annular body with a notch, a first rib perpendicularly connected to both axial sides of the annular body, and a second rib connected to the first rib and parallel to the annular body, such that the overall cross-section of the retaining ring is "U"-shaped. When the retaining ring is installed on a bearing, the inner wall of the first rib abuts against one side of the groove of the bearing inner ring, and the outer wall of the second rib abuts against the other side of the groove of the bearing inner ring, firmly locking the two bearing inner rings together and ensuring the normal operation of the bearing.

[0007] In a preferred implementation, the lengths of the first and second ribs along the circumferential direction of the annular body are adapted to the circumferential length of the annular body.

[0008] In a preferred implementation, the transition position between the first rib and the annular body is a rounded corner transition, and the transition position between the first rib and the second rib is also a rounded corner transition.

[0009] In a preferred embodiment, the annular body, the first rib, and the second rib are integrally formed.

[0010] In a preferred implementation, the first rib and the second rib have the same thickness.

[0011] In a preferred embodiment, the surface of the second rib is provided with a deformation groove, and the length of the second rib is greater than the length of the inner ring groove of the bearing; when the second rib enters the inner ring groove of the bearing, the second rib can deform relative to the deformation groove to form an interference fit with the inner ring groove of the bearing.

[0012] In a preferred implementation, the deformation groove is an inverted triangular groove or a semi-circular groove.

[0013] In a preferred implementation, after the snap ring is installed on the bearing, the plane of the annular body is lower than the inner wall of the bearing inner ring.

[0014] A bearing connected by a snap ring includes two bearing inner rings. The inner wall of the smaller end of the bearing inner ring is provided with an annular groove, and the height of the side of the annular groove near the smaller end of the inner ring is lower than the height of the side away from the smaller end of the inner ring.

[0015] The above structure has the following beneficial effects:

[0016] The first and second ribs abut against the sides of the inner ring groove of the bearing, forming a two-way locking mechanism. Compared with existing retaining rings, this fixing method can more effectively limit the relative displacement between the two bearing inner rings, ensuring the concentricity and stability of the bearing inner rings. The second rib of the new retaining ring is connected to the first rib and parallel to the annular body, making the overall cross-section of the retaining ring shaped like a "U". This structure gives the second rib a certain elastic deformation capacity. During installation, the second rib can adapt to the installation space and force through elastic deformation, achieving uniform and controllable deformation. After the retaining ring is installed in place, the second rib can quickly return to its original shape, tightly fitting against the inner ring groove of the bearing, firmly locking the two bearing inner rings together. This not only reduces the installation difficulty and improves the installation efficiency, but also reduces the possibility of retaining ring damage during installation, ensuring the installation quality of the bearing. Attached Figure Description

[0017] The accompanying drawings, which are included to provide a further understanding of the present invention and constitute a part of this invention, illustrate exemplary embodiments of the present invention and, together with the description thereof, serve to explain this application and do not constitute an undue limitation of the present invention. In the drawings:

[0018] Figure 1 A schematic three-dimensional structural diagram of one embodiment of the novel snap ring of this application is shown;

[0019] Figure 2 An enlarged structural schematic diagram of one embodiment of the novel snap ring cross-section of this application is shown;

[0020] Figure 3 The diagram illustrates a schematic embodiment of the novel retaining ring with a deformation groove according to this application.

[0021] Figure 4 The diagram illustrates a schematic embodiment of the novel snap ring of this application installed inside a bearing.

[0022] Label Explanation:

[0023] 1. Annular body; 2. First rib; 3. Second rib; 30. Deformation groove; 4. Inner ring of bearing; 40. Annular groove. Detailed Implementation

[0024] In the following description, only certain exemplary embodiments are briefly described. As those skilled in the art will recognize, the described embodiments can be modified in various ways without departing from the spirit and scope of this invention. Therefore, the drawings and description are considered exemplary in nature and not restrictive.

[0025] In the description of this utility model, it should be understood that the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "axial," "radial," and "circumferential," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. In this utility model, unless otherwise expressly specified and limited, the first feature being "upper" or "lower" than the second feature can mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium.

[0026] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral unit; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. However, specifying a direct connection indicates that the two main bodies at the connection point are not connected by an intermediate structure, but are simply connected to form a whole through a connecting structure. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0027] In this utility model, descriptions involving "first," "second," etc., are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature.

[0028] The present invention will now be described with reference to the accompanying drawings.

[0029] The specific solution adopted is as follows:

[0030] like Figure 1-4 As shown, this utility model provides a novel retaining ring, including an annular body 1 with a notch, a first rib 2 vertically connected to both axial sides of the annular body 1, and a second rib 3 connected to the first rib 2 and parallel to the annular body 1, so that the overall cross-section of the retaining ring is "U" shaped. When the retaining ring is installed on the bearing, the inner wall of the first rib 2 abuts against one side of the groove of the inner ring 4 of the bearing, and the outer wall of the second rib 3 abuts against the other side of the groove of the inner ring 4 of the bearing, firmly locking the two inner rings 4 of the bearing together to ensure the normal operation of the bearing.

[0031] By adopting the novel snap ring of the present application, the first rib 2 and the second rib 3 are respectively abutted against both sides of the groove portion of the bearing inner ring 4, forming a two-way clamping fixing method. Compared with the existing snap ring, this fixing method can more effectively restrict the relative displacement between the two bearing inner rings 4, ensuring the concentricity and stability of the bearing inner ring 4. The second rib 3 of the novel snap ring is connected to the first rib 2 and parallel to the annular body 1, making the overall cross-section of the snap ring in a "Ji" shape. This structure endows the second rib 3 with a certain elastic deformation ability. During the installation process, the second rib 3 can adapt to the installation space and force through elastic deformation, realizing uniform and controllable deformation. When the snap ring is installed in place, the second rib 3 can quickly recover to its original state, closely fit with the groove portion of the bearing inner ring 4, and firmly clamp the two bearing inner rings 4 together. This not only reduces the installation difficulty, improves the installation efficiency, but also reduces the possibility of snap ring damage during the installation process, ensuring the installation quality of the bearing.

[0032] See Figure 1 , as a preferred embodiment of the present application, the circumferential lengths of the first rib 2 and the second rib 3 along the annular body 1 are adapted to the circumferential length of the annular body 1. So that the first rib 2 and the second rib 3 can fully contact the groove portion of the bearing inner ring 4 along the entire circumference of the annular body 1. This comprehensive clamping method makes the binding force of the snap ring on the two bearing inner rings 4 evenly distributed on the entire circumference, effectively preventing the relative displacement of the inner rings in the axial and radial directions.

[0033] See Figure 2 , the connection transition position between the first rib 2 and the annular body 1 is a fillet transition, and the connection transition position between the first rib 2 and the second rib 3 is a fillet transition. The fillet transition can make the stress evenly distributed in the transition area, avoiding the sharp change of stress. When the snap ring bears axial force or radial force, the fillet transition can guide the stress to be transmitted smoothly, reducing the local high-stress area, thereby reducing the risk of the snap ring breaking due to stress concentration.

[0034] As a preferred embodiment of the present application, the annular body 1, the first rib 2 and the second rib 3 are integrally formed. The integral forming process can process the annular body 1, the first rib 2 and the second rib 3 into a formed state at one time. When bearing a large load or being impacted by an external force, the integrally formed snap ring can maintain good geometric shape and dimensional stability.

[0035] Furthermore, the thicknesses of the first rib 2 and the second rib 3 are the same, and they can jointly and evenly share the force exerted by the bearing, whether it is axial force or radial force.

[0036] In a preferred embodiment of this application, the surface of the second rib 3 is provided with a deformation groove 30, which is an inverted triangular groove or a semi-circular groove. The length of the second rib 3 is greater than the length of the groove in the inner ring 4 of the bearing. When the second rib 3 enters the groove in the inner ring 4 of the bearing, it deforms relative to the deformation groove 30, forming an interference fit with the groove. Because the length of the second rib 3 is greater than the length of the groove and its surface is provided with the deformation groove 30, under the action of the installation force, the second rib 3 will undergo elastic or plastic deformation along the deformation groove 30, thereby generating an interference fit with the inner diameter of the groove in the inner ring 4 of the bearing. This interference fit allows the second rib 3 to form a tight connection with the groove in the inner ring 4 of the bearing, eliminating gaps between them and preventing problems such as loosening, vibration, and noise caused by gaps. This tight connection ensures the stable operation of the bearing system and improves transmission efficiency and accuracy.

[0037] In a preferred embodiment of this application, when the retaining ring is installed on the bearing, the plane of the annular body 1 is lower than the inner wall surface of the bearing inner ring 4. If the plane of the retaining ring body 1 is flush with or higher than the inner wall surface of the bearing inner ring 4, the shaft will directly contact the retaining ring during rotation. Due to the differences in material and surface roughness between the retaining ring and the shaft, the friction between them will generate a large frictional force, which will not only consume additional energy and increase the power consumption of the mechanical system, but also cause wear on the surfaces of the shaft and the retaining ring. However, by designing the plane of the annular body 1 to be lower than the inner wall surface of the bearing inner ring 4, the shaft and the retaining ring can be completely isolated, fundamentally avoiding this direct friction and greatly reducing energy loss and component wear.

[0038] See Figure 4 A bearing connected by a snap ring includes two bearing inner rings 4. The inner wall of the smaller end of the bearing inner ring 4 is provided with an annular groove 40. The height of the side of the annular groove near the smaller end of the inner ring is lower than the height of the side away from the smaller end of the inner ring.

[0039] The annular groove provides a clearly defined installation position for the retaining circlip. During assembly, operators can quickly and accurately place the retaining circlip within the groove, avoiding assembly errors caused by misalignment. Furthermore, the specific shape and dimensions of the annular groove match the retaining circlip, providing excellent constraint and preventing axial or radial movement during bearing operation. This ensures the retaining circlip remains in the correct position, stably fulfilling its fixing and limiting functions. The height of the two sides of the annular groove ensures that the annular body 1 is lower than the inner wall of the bearing inner ring 4 after installation, avoiding direct contact between the shaft and the retaining circlip, thereby reducing friction and wear.

[0040] For any parts not mentioned in this utility model, existing technologies can be used or referenced.

[0041] The above are merely specific embodiments of this utility model, but the protection scope of this utility model is not limited thereto. Any person skilled in the art can easily conceive of various variations or substitutions within the technical scope disclosed in this utility model, and these should all be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope of the claims.

Claims

1. A new type of circlip, characterized in that, It includes an annular body with a notch. The first rib is vertically connected to both axial sides of the annular body. The second rib is connected to the first rib and parallel to the annular body, such that the overall cross-section of the snap ring is in a "ji" shape. After the snap ring is installed on the bearing, the inner wall of the first rib abuts against one side of the inner ring groove part of the bearing, and the outer wall of the second rib abuts against the other side of the inner ring groove part of the bearing, firmly clamping the two inner rings of the bearing together to ensure the normal operation of the bearing.

2. The new type of clip spring according to claim 1, characterized in that The lengths of the first rib and the second rib along the circumferential direction of the annular body are adapted to the circumferential length of the annular body.

3. The new type of clip spring according to claim 1, characterized in that, The connection transition position between the first rib and the annular body is a fillet transition, and the connection transition position between the first rib and the second rib is a fillet transition.

4. The new type of clip spring according to claim 1, characterized in that, The annular body, the first rib and the second rib are integrally formed.

5. The new type of clip spring according to claim 1, characterized in that, The first rib and the second rib have the same thickness.

6. The new type of clip spring according to claim 1, characterized in that The surface of the second rib is provided with a deformation groove, and the length of the second rib is greater than the length of the inner ring groove part of the bearing; when the second rib enters the inner ring groove part of the bearing, the second rib can deform relative to the deformation groove to form an interference fit with the inner ring groove part of the bearing.

7. The new type of clip spring according to claim 6, characterized in that The deformation groove is an inverted triangular groove or a semi-circular groove.

8. The new type of clip spring according to claim 1, characterized in that After the snap ring is installed on the bearing, the plane of the annular body is lower than the inner wall surface of the inner ring of the bearing.

9. A bearing connected with the new type of circlip according to any one of claims 1-8, characterized in that, It includes two inner rings of the bearing. The inner wall of the small end of the inner ring of the bearing is provided with a ring groove, and the height of one side of the ring groove close to the small end of the inner ring is lower than the height of the side far from the small end of the inner ring.

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